Vermiculite is a natural mineral, non-toxic, will expand at high temperature under the action of mineral. It is arelatively rare mineral, which belongs to the portland. The crystal structure is monoclinic, from the shape it looks like mica. Certain granite hydrated vermiculite is generated. It usually comes with asbestos are generated simultaneously. The ability of ion exchange vermiculite, its soil nutrition has a great role.

          Vermiculite can be used as construction materials, adsorbents, fireproof insulation, mechanical lubricant, soil conditioner and so on, a wide range of uses.